Left 4 Dead 2 is a 2009 multiplayer survival horror game developed and published by Valve. The sequel to Turtle Rock Studios's Left 4 Dead, it was released for Windows and Xbox 360 in November 2009, Mac OS X in October 2010, and Linux in July 2013. L4D Team. An update has been released for Left 4 Dead 2. - Fixed "New Haircut" achievement to not allow club-type melee weapons.
